visual studio 2017 .NET SDK does not support targeting .NET Core 2.0 - visual-studio-2017

Question

I am breaking my head over this for a while now:
I have tried installing both professional and community version of visual studio 2017 v 15.5.2
and installed .net core Runtime 2.0.3 and .net core SDK 2.1.2.
When I open a new web application I get an error saying
"the sdk 'microsoft.net.sdk.web' specified could not be found"
When I try to build an existing project I get an error
"the current .NET SDK does not support targeting .NET Core 2.0. Either
target .NET Core 1.1 or lower, or use a version of the .NET SDK that
supports .NET Core 2.0."
I don't see ".net core 2.0" in my target framework
I don't have global.json file in my computer
When I try dotnet --info, I get this
.NET Command Line Tools (2.1.2)
Product Information:
Version: 2.1.2
Commit SHA-1 hash: 5695315371
Runtime Environment:
OS Name: Windows
OS Version: 10.0.10586
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\2.1.2\
Microsoft .NET Core Shared Framework Host
Version : 2.0.3
Build : a9190d4a75f4a982ae4b4fa8d1a24526566c69df
Some one please help

Answer 1

Fixed it by adding a MSBuildSdksPath userVariable.
Add an Enviroment variable named MSBuildSdksPath.
It's value should point to a Dotnet SDK folder. Eg:
C:\Program Files\dotnet\sdk\2.2.102\Sdks